Given a triangle ABC with the incircle I. Let EA, EB, EC be the excircles and TA, TB, TC be the extouch points. The Lines ATA, BTB, CTC concur in the Nagel point N and cuts the incircle at IA, IB, IC. Prove that AIA = NTA,BIB = NTB, CIC = NTC.
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Ten problems: 1411-1420
Circle Tangent Line
HTML5 and Dynamic Geometry
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